Thank you for your question.

Please try turning disabling your Firewall and Anti-Virus softwares and then use the link below to complete your installation:

https://intuitglobal.intuit.com/downloads/CanadaTax/2015/dls/Install2015_Bld1012_Nov23.exe

If you are still having difficulty completing this installation, kindly contact TurboTax Support to resolve this with an agent: https://support.turbotax.intuit.ca/contact/